linux-toradex.git/arch/arm64/tools/Makefile, branch master

arm64/hwcap: Generate the KERNEL_HWCAP_ definitions for the hwcaps

2026-04-09T15:50:23+00:00

Currently for each hwcap we define both the HWCAPn_NAME definition which is
exposed to userspace and a kernel internal KERNEL_HWCAP_NAME definition
which we use internally. This is tedious and repetitive, instead use a
script to generate the KERNEL_HWCAP_ definitions from the UAPI definitions.

No functional changes intended.

Signed-off-by: Mark Brown 
Signed-off-by: Catalin Marinas

arm64: generate 64-bit syscall.tbl

2024-07-10T12:23:38+00:00

Change the asm/unistd.h header for arm64 to no longer include
asm-generic/unistd.h itself, but instead generate both the asm/unistd.h
contents and the list of entry points using the syscall.tbl scripts that
we use on most other architectures.

Once his is done for the remaining architectures, the generic unistd.h
header can be removed and the generated tbl file put in its place.

The Makefile changes are more complex than they should be, I need
a little help to improve those. Ideally this should be done in an
architecture-independent way as well.

Acked-by: Catalin Marinas 
Signed-off-by: Arnd Bergmann

arm64: Factor out cpucap definitions

2023-10-16T11:57:45+00:00

For clarity it would be nice to factor cpucap manipulation out of
, and the obvious place would be , but
this will clash somewhat with .

Rename  to ,
matching what we do for , and introduce a
new  which includes the generated header.

Subsequent patches will fill out .

There should be no functional change as a result of this patch.

Signed-off-by: Mark Rutland 
Cc: Marc Zyngier 
Cc: Mark Brown 
Cc: Suzuki K Poulose 
Cc: Will Deacon 
Signed-off-by: Catalin Marinas

arm64/sysreg: Enable automatic generation of system register definitions

2022-05-04T14:30:28+00:00

Now that we have a script for generating system registers hook it up to the
build system similarly to cpucaps. Since we don't currently have any actual
register information in the input file this should produce no change in the
built kernel. For ease of review the register information will be converted
in separate patches.

Signed-off-by: Mark Brown 
Acked-by: Mark Rutland 
Link: https://lore.kernel.org/r/20220503170233.507788-10-broonie@kernel.org
Signed-off-by: Catalin Marinas

arm64: clean up tools Makefile

2022-03-08T11:17:10+00:00

Remove unused gen-y.

Remove redundant $(shell ...) because 'mkdir' is done in cmd_gen_cpucaps.

Replace $(filter-out $(PHONY), $^) with the $(real-prereqs) shorthand.

The '&&' in cmd_gen_cpucaps should be replaced with ';' because it is
run under 'set -e' environment.

Signed-off-by: Masahiro Yamada 
Link: https://lore.kernel.org/r/20220227085232.206529-1-masahiroy@kernel.org
Signed-off-by: Will Deacon

arm64: Generate cpucaps.h

2021-05-10T09:16:37+00:00

The arm64 code allocates an internal constant to every CPU feature it can
detect, distinct from the public hwcap numbers we use to expose some
features to userspace. Currently this is maintained manually which is an
irritating source of conflicts when working on new features, to avoid this
replace the header with a simple text file listing the names we've assigned
and sort it to minimise conflicts.

As part of doing this we also do the Kbuild hookup required to hook up
an arch tools directory and to generate header files in there.

This will result in a renumbering and reordering of the existing constants,
since they are all internal only the values should not be important. The
reordering will impact the order in which some steps in enumeration handle
features but the algorithm is not intended to depend on this and I haven't
seen any issues when testing. Due to the UAO cpucap having been removed in
the past we end up with ARM64_NCAPS being 1 smaller than it was before.

Signed-off-by: Mark Brown 
Reviewed-by: Mark Rutland 
Tested-by: Mark Rutland 
Link: https://lore.kernel.org/r/20210428121231.11219-1-broonie@kernel.org
Signed-off-by: Catalin Marinas